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Displaying 726 - 750 of 3901

Final Report, National Institute of Standards and Technology (NIST) Technical Investigation of the May 22, 2011, Tornado in Joplin, Missouri

March 26, 2014
Author(s)
Erica D. Kuligowski, Franklin T. Lombardo, Long Phan, Marc L. Levitan, David P. Jorgensen
This is the final report of the National Institute of Standards and Technology (NIST) investigation of the May 22, 2011 tornado in Joplin, Missouri, conducted under the National Construction Safety Team Act. This report describes the wind field of the

Modeling of moment connections for structural fire analyses

March 25, 2014
Author(s)
Mina S. Seif, Therese P. McAllister, Joseph A. Main, William E. Luecke
Performance-based methodologies to evaluate the fire performance of structures are needed to move beyond the prescriptive procedures presently in use, which cannot be used to determine actual structural performance in fire. Analytical methods are needed

Software Independent Data Mapping Tool for Structural Fire Analysis

March 12, 2014
Author(s)
Dilip K. Banerjee
In order to model the structural behavior under fire, three separate analyses need to be conducted: a) fire propagation and growth (fire modeling), b) transient heat transfer in structural members due to fire, and c) structural analysis to account for both

Guidance Document: Emergency Communication Strategies for Buildings

March 3, 2014
Author(s)
Erica D. Kuligowski
The purpose of this report is to provide guidance to system designers, building managers and/or building emergency personnel responsible for emergency communication on how to create and disseminate messages using basic communication modes (audible and/or

Stair Evacuation of People with Mobility Impairments

March 3, 2014
Author(s)
Erica D. Kuligowski, Richard Peacock, Bryan Hoskins, Emily Wiess
The time that it takes a population to reach safety when descending a stairwell during building evacuations is typically described by measureable engineering variables. These engineering variables include stairwell geometry, speed, density, and pre

Fire Characteristics of Steel Members Coated with Nano-Enhanced Polymers

March 1, 2014
Author(s)
Kathryn M. Butler, Alexander H. Cheng, Christopher Mullen, Ahmed Al-Ostaz
Applying a polymeric coating on steel members has been demonstrated to be an effective countermeasure for the threat of blast on building and other structures. The development of a blast-resistant coating for steel with good characteristics in a fire would

IAQ 2013 Tools Topic Overview

February 20, 2014
Author(s)
Steven J. Emmerich, Larry Schoen
The complex relationships between indoor and outdoor environmental conditions, coupled with the impacts of climate change, make it more important than ever before that buildings be comfortable and healthy for the occupants yet also energy efficient. This

Environmental Health in Low Energy Buildings Topic Overview

February 11, 2014
Author(s)
Steven J. Emmerich, Hal Levin
Besides providing thermal comfort and acceptable indoor environmental quality (IEQ), the designers of buildings and other enclosed spaces are increasingly challenged to provide a healthy environment in an energy efficient manner. Increasing pressure to

The IAQ and Energy Impacts of Reducing Formaldehyde Emissions in Commercial Building

February 11, 2014
Author(s)
Lisa C. Ng, Andrew K. Persily, Steven J. Emmerich, Kevin Y. Teichman
Heating, ventilating, and air conditioning (HVAC) systems in buildings are designed to provide thermally comfortable conditions and to maintain acceptable indoor air quality (IAQ). At the same time, the operating costs of HVAC systems are often a large

Development of Standard Reference Materials for Cement-Based Materials

January 6, 2014
Author(s)
Chiara F. Ferraris, Nicos Martys, William L. George
Rotational rheometers are routinely used for homogeneous materials, but their usage for characterization of a granular fluid like concrete is a relatively new phenomenon. As measurements with rheometers can involve flow in a complex geometry, it is

A probabilistic approach for the analysis of stair evacuation movement data

January 1, 2014
Author(s)
Enrico Ronchi, Erica D. Kuligowski, Richard D. Peacock, Paul A. Reneke
This paper presents an innovative method to study stair evacuation data based on a probabilistic analysis of occupant travel paths. This type of approach relies on a detailed video analysis of people movement and pattern reconstruction. Conditional

Reducing the Risk of Fire in Buildings and Communities

January 1, 2014
Author(s)
Anthony Hamins, Jason D. Averill, Nelson P. Bryner, David Butry, Richard Gann, Rick D. Davis, Daniel M. Madrzykowski, Alexander Maranghides, Jiann C. Yang, Matthew Bundy, Samuel Manzello, Jeffrey W. Gilman, Francine K. Amon, William E. Mell
Fire costs and losses are a significant life safety and economic burden on society comprising about two percent of the United States gross domestic product. This paper presents the results of a roadmap developed by the National Institute of Standards and
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